From 222e2a7620e6520ffaf4fc4e69d79c18da31542e Mon Sep 17 00:00:00 2001
From: "Zancanaro; Carlo" <czan8762@plang3.cs.usyd.edu.au>
Date: Mon, 24 Sep 2012 09:58:17 +1000
Subject: Add the clang library to the repo (with some of my changes, too).

---
 clang/test/CodeGenObjC/arc-unopt.m | 69 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 69 insertions(+)
 create mode 100644 clang/test/CodeGenObjC/arc-unopt.m

(limited to 'clang/test/CodeGenObjC/arc-unopt.m')

diff --git a/clang/test/CodeGenObjC/arc-unopt.m b/clang/test/CodeGenObjC/arc-unopt.m
new file mode 100644
index 0000000..c319bf2
--- /dev/null
+++ b/clang/test/CodeGenObjC/arc-unopt.m
@@ -0,0 +1,69 @@
+// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -emit-llvm -fobjc-runtime-has-weak -fblocks -fobjc-arc -o - %s | FileCheck %s
+
+// A test to ensure that we generate fused calls at -O0.
+
+@class Test0;
+Test0 *test0(void) {
+  extern Test0 *test0_helper;
+  return test0_helper;
+
+  // CHECK:      [[LD:%.*]] = load [[TEST0:%.*]]** @test0_helper
+  // CHECK-NEXT: [[T0:%.*]] = bitcast [[TEST0]]* [[LD]] to i8*
+  // CHECK-NEXT: [[T1:%.*]] = call i8* @objc_retainAutoreleaseReturnValue(i8* [[T0]])
+  // CHECK-NEXT: [[T2:%.*]] = bitcast i8* [[T1]] to [[TEST0]]*
+  // CHECK-NEXT: ret [[TEST0]]* [[T2]]
+}
+
+id test1(void) {
+  extern id test1_helper;
+  return test1_helper;
+
+  // CHECK:      [[LD:%.*]] = load i8** @test1_helper
+  // CHECK-NEXT: [[T0:%.*]] = call i8* @objc_retainAutoreleaseReturnValue(i8* [[LD]])
+  // CHECK-NEXT: ret i8* [[T0]]
+}
+
+void test2(void) {
+  // CHECK:      [[X:%.*]] = alloca i8*
+  // CHECK-NEXT: store i8* null, i8** [[X]]
+  // CHECK-NEXT: call void @objc_destroyWeak(i8** [[X]])
+  // CHECK-NEXT: ret void
+  __weak id x;
+}
+
+id test3(void) {
+  extern id test3_helper(void);
+  // CHECK:      [[T0:%.*]] = call i8* @test3_helper()
+  // CHECK-NEXT: ret i8* [[T0]]
+  return test3_helper();
+}
+
+@interface Test4 { id x; } @end
+@interface Test4_sub : Test4 { id y; } @end
+Test4 *test4(void) {
+  extern Test4_sub *test4_helper(void);
+  // CHECK:      [[T0:%.*]] = call [[TEST4S:%.*]]* @test4_helper()
+  // CHECK-NEXT: [[T1:%.*]] = bitcast [[TEST4S]]* [[T0]] to [[TEST4:%.*]]*
+  // CHECK-NEXT: ret [[TEST4]]* [[T1]]
+  return test4_helper();
+}
+
+// rdar://problem/9418404
+@class Test5;
+void test5(void) {
+  Test5 *x, *y;
+  if ((x = y))
+    y = 0;
+
+// CHECK:    define void @test5()
+// CHECK:      [[X:%.*]] = alloca [[TEST5:%.*]]*,
+// CHECK-NEXT: [[Y:%.*]] = alloca [[TEST5:%.*]]*,
+// CHECK-NEXT: store [[TEST5]]* null, [[TEST5]]** [[X]],
+// CHECK-NEXT: store [[TEST5]]* null, [[TEST5]]** [[Y]],
+// CHECK-NEXT: [[T0:%.*]] = load [[TEST5]]** [[Y]],
+// CHECK-NEXT: [[T1:%.*]] = bitcast [[TEST5]]** [[X]] to i8**
+// CHECK-NEXT: [[T2:%.*]] = bitcast [[TEST5]]* [[T0]] to i8*
+// CHECK-NEXT: call void @objc_storeStrong(i8** [[T1]], i8* [[T2]])
+// CHECK-NEXT: [[T3:%.*]] = icmp ne [[TEST5]]* [[T0]], null
+// CHECK-NEXT: br i1 [[T3]],
+}
-- 
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